Steam-generator



(No Model.)

Wines; es:

GQA'. WELLS. Steam Generator Patented April 19,1881.

I I C l I II] Inward-0r.

ETER. OGR w| UNIT D STATES I PATENT GEORGE A. WELLS OF OSKALOOSA, IOWA.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 240,292, dated April19, 1881.

Application filedDecember 15, 1880.

To all whom it may concern Be it known that I, GEORGE A. Inns, ofOskaloosa, in the county of Mahaska and State of Iowa, have inventedcertain new and useful Improvements in Steam-Generators; and I do herebydeclare that the following is a full, clear, and exact description ofthe invention, which will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

Figure 1 is a perspective view. Fig. 2 is a vertical sectional view, andFig. 3 is a horizontal sectional view on the line 00 a; of Fig. 2.

Corresponding parts in the several figures are denoted by like lettersof reference.

This invention relates to steam-generators; and it consists in certainimprovements in the construction of the same, which will be hereinafterfully described ,and particularly pointed out in the claim.

In the drawings hereto annexed, A represents the outer shell, and B theinner shell or fire-chamber, of my improved stean'i-generator. The saidinner shell or fire-box is provided with a top or dome having asmoke-stack, O, and a hinged cover, D, through which the fire may befed. The space between the inner and outer shells is partitionedhorizontally into.

two compartments, the upper one of which, E, is provided with one ormore openings, F, for the admission of feed-water. tition G, which formsthe bottom of the upper compartment, a pipe, H, extends down to within ashort distance of the bottom of the lower compartment, J, to which thewater, which has first been partially heated in the upper compartment,is thus constantly fed or supplied.

l is a pipe coiled within the firebox, as shown, and communicatingthrough an opening in shell B with the lower compartment, J, near thebottom of the latter. The upper end of pipe I extends through the shellB 5 just below the bottom of the upper compartment, and into asteam-chest, K. The latter is provided, at or near its top, with a pipe,L, extending through shell A, and having a nipple, M, for connectionwith the pipe or pipes through which steam is conveyed to the point orpoints where it is to be utilized. From the bottom of steam-chest K apipe, N, passes down vertically to within a short distance of From thepar- (No model.)

the bottom of chamber J, for the purpose of carrying back any condensedsteam or water forced up through pipe I, which would otherwise becarried to the radiators.

Arranged under the fire-box is the grate P and ash pan or box Q, in theconstruction of which no novelty is claimed.

From the foregoing description, taken in. connection with the drawingshereto annexed, the operation and advantages of my invention will bereadily understood. The boiler is simple, durable, and economical.

I am aware that a spiral coil of pipe arranged within the furnace of aboiler and connected at its lower end to the lower portion or water-legof the boiler, and its upper end extending above the water-line, or tothe steamdome of the boiler, and also. a water-chamber divided by ahorizontal partition into upper and lower compartments communicatingwith each other, and having a fire-chamber and combustion-flue passingcentrally through said compartments, the fire-chamber having a water-tank communicating on different planes with the lowerwater-compartment, are old in steam-generators, and such I do not wishto be understood as claiming, broadly, as of my invention.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States In a steam-generator, thecombination, with the shells A B, forming an interior fire-chamber and asurrounding water-chamber, and the horizontal partition Gr, dividingsaid waterchamber into upper and lower compartments, E J communicatingwith each other by a pipe, H, of the coiled pipe I, arranged in thefirechamber and communicating at the lower end thereof with the lowerend of compartment J, and having its upper end terminating in asteam-chest, K, arranged in the upper portion of the compartment J, andhaving a dischargepipe and a drip-pipe, N, terminating near the lowerend of said compartment J, as and for the purpose herein shown anddescribed.

